Search: id:A083891
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%I A083891
%S A083891 0,0,0,1,0,0,0,1,0,0,0,1,0,1,0,1,0,0,0,1,0,0,0,2,0,0,0,2,0,0,0,1,0,1,0,
%T A083891 1,0,0,0,2,1,2,1,2,0,0,0,2,0,0,0,1,0,0,0,2,0,0,0,1,0,0,0,1,0,0,0,2,0,1,
%U A083891 0,2,0,0,0,1,0,0,0,2,0,1,0,3,0,1,0,2,0,0,0,1,0,0,0,2,0,1,0,1,0,1,0,2,0
%N A083891 Number of divisors of n with largest digit = 4 (base 10).
%C A083891 a(n) = A000005(n) - A083888(n) - A083889(n) - A083890(n) - A083892(n) 
               - A083893(n) - A083894(n) - A083895(n) - A083896(n) = A083899(n) 
               - A083898(n).
%e A083891 n=120, 3 of the 16 divisors of 120 have largest digit =4:
%e A083891 {4,24,40}, therefore a(120)=3.
%Y A083891 Cf. A054055, A000005, A083899.
%Y A083891 Sequence in context: A130207 A167688 A083914 this_sequence A087623 A036274 
               A047753
%Y A083891 Adjacent sequences: A083888 A083889 A083890 this_sequence A083892 A083893 
               A083894
%K A083891 nonn,base
%O A083891 1,24
%A A083891 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 08 2003

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